Garden box



FIG. 1 is a perspective view of a garden box showing my new design;

FIG. 2 is a top plan view thereof, the bottom being a mirror image; and,

FIG. 3 is a right side elevational view thereof, the left side being a mirror image.

The rear of the garden box forms no part of the claimed design. 

The ornamental design for a garden box, as shown and described. 